Motion-picture apparatus



April 7,' 1925. 1,532,805

P. 5. GAURIAT MOTION PICTURE APPARATUS- Filed March 15, 1923 INVENTOR; W

44 Amway.

Patented Apr. 7, 1925.

- PIERRE SYLVAIN GAUBIAT, OF PARIS,

FRANCE, ASSIGNOR TO PATHE CINEMA,

ANOIENS ETABLISSEMENTS PATHE FREBES, 0F PARIS, FRANCE. i

IVIOTION-IPIGT'URE APPARATUS.

i Application filed. March 15, 1923. Serial No. 625,238.

1 c all whom it may concern: 1

Be 1t known that I, PIERRE SYLVA'IN GAURIA'l,'CltlZ-11 of the FrenchRepublic, re-

siding at Paris, in the French Republic, have invented new and usefulImprovements in Motion-Picture Apparatus, of which the following is aspecification.

This invention relates toimprovements in the device for winding the filmupon itself in the receiving chamber of a motion picture apparatus, asdescribed in my main patent application filed under N 0. 534,073. Insaid patent application, the automatic winding of the film upon itselfwas facilitated by means of a stud carried by an arm rotating in saidchamber.

According to the present invention, said stud is carried by a rotatabledisc or portion of disc actuated by the actuating handle of theapparatus, while a member provided with a face inclined with respect tothe edge of the film causes the edge of the film to constantly bear uponsaid disc in order to provide for the regular driving and winding of thefilm.

In the accompanying drawing way of example:

Fig. 1 is a side view with partial section of a. motion pictureapparatus provided with the improved device, according to thisinventio-n.

Fig. 2 is a front view of the motion pictureapparatus with a crosssection of the device according to the invention.

The apparatus shown in Figs. 1 and 2 comprises: a disc or a portion of adisc, made of any material mounted on an axle 46 and rotating in acircular chamber 51 provided in the base of the apparatus and whereinthe portion a. of the film which has been projected is made toenterthrough the opening 52 and perpendicularly to the plane of thedisc.

The disc 50, which carries a stud 50 is actuated by the drivingmechanism of the c-inematograph, by means of a belt or of suitable gearwheels with a suit-able gear ratio.

A conical segment 54 is combined at its outer part with the cylindricalwall of the chamber 51. The inner face 55 of this segment has the formof a frustnm of av straight cone with circular base, whose larger basegiven by is placed adjacent the disc 50. Against the smaller base issecured a disc 56 which may be made'of a transparent material, so as topermit inspection, and which is also preferably removably secured, inorder to facihtate the access to the mechanism.

The operation of the device is as follows:

During the operation of the motion picture apparatus, the operator turnsthe handle 26 and the disc 50 is rotated in the direction of the arrow.The film a issuing from the opening 52 upon the inclined part 55 of theconical portion 54 and sliding thereon, the edge of said film is causedto bear upon the disc 50, firstly by the action of gravity, and alsoafter a certain number of turns have been formed, by the action of thecentrifugal force due to the rotation of the coil in formation. In itsrotation, the disc 50 drives by friction the portion of film enteringthe chamber 51 through the opening 52 and winds up the same in spiralshape in the space comprised between the disc 50, the plate 56 and theinner face 55 of the ring 54.- All the turns of film, accord ing to thesame process, are wound up in superposition upon each other in saidspace; the stud 50 which is secured to the disc and is perpendicular tothe same, facilitates the winding of the film by its constant action onthe inner turn of film. Said inner turn serves as a support for the coilwhich is bein formed and said su ort bein driven V by the stud 50 whichimparts to thesame a movement of rotation; this prevents the brakingwhich would take place if the coil should constantly bear upon thebottom of the chamber 51.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is: I

1. In a motion picture apparatus, the combination with the drivingmechanism for the film, of a receiving chainl'icr for the film, providedat the lower part of the apparatus, and having an opening through whichthe film is adapted to be led, a disc rotatably mounted in said chamber,means o 'Jeratively connected to said driving meansfor rotating saiddisc, a member provided with an inclined face adapted to pressconstantly the edge of the film upon said disc, and a stud carried bysaid disc, at right angle with the latter.

2. In a motion picture mppuratus, the combination with the drivingmechanism for the film, of a receiving chan'lber for the film,

provided at the lower part of the apparatus, and having an openingthrough which the film is adapted to be led, a disc rotatably mounted insaid chamber, means operatively connected tosaid driving means forrotating said disc, a. ring secured to the inner Wall of said chamber,the inner surface of said ring having a truncated cone shape the widerbase whereof is adjacent said disc, a plate for closing the oppositebase of said 10 ring, and a. stud carried by said disc at right anglewith the latter.

In testimony whereof I have si ned my name to this specification.

PIER-RE SYLVAIN GAURIAT.

